cast from string to button

[Jon Vaughan]

Im trying to make some code that can reference x amount of buttons and then
switch visible to false

For x = 1 To 10

btnSelected = CType("btnButto n" & x.ToString, Button)

btnSelected.Vis ible = False

Next

Provides the error :

Value of type 'String' cannot be converted to 'System.Windows .Forms.Button'.

Any ideas, about converting string to object types such as buttons ?

[Cor Ligthert [MVP]]

Re: cast from string to button

Jon,

If you will add this string on runtime, than the best approach is to add the
values from the string to the Tag of the button. (typed here so watch typos
or whatever)

Than you get

For each ctr in controls
if typeof ctr Is button then
if ctr.tag.toStrin g = TheGivenString
btnSelected.Vis ible = False
end if
end if
Next


This goes fast, you can do it as well with late binding using reflection but
that will cost you performance.

In development time this kind of instructions are in my opinion without
sense when you know the name of a control than there is no need to use a
string. (It looks than like a misplaced way of using scripting).

I hope this helps,

Cor

[Jon Vaughan]

Re: cast from string to button

Thanks cor , helped alot

"Cor Ligthert [MVP]" <notmyfirstname @planet.nl> wrote in message
news:%23259y6sj GHA.4444@TK2MSF TNGP02.phx.gbl. ..[color=blue]
> Jon,
>
> If you will add this string on runtime, than the best approach is to add
> the values from the string to the Tag of the button. (typed here so watch
> typos or whatever)
>
> Than you get
>
> For each ctr in controls
> if typeof ctr Is button then
> if ctr.tag.toStrin g = TheGivenString
> btnSelected.Vis ible = False
> end if
> end if
> Next
>
>
> This goes fast, you can do it as well with late binding using reflection
> but that will cost you performance.
>
> In development time this kind of instructions are in my opinion without
> sense when you know the name of a control than there is no need to use a
> string. (It looks than like a misplaced way of using scripting).
>
> I hope this helps,
>
> Cor
>[/color]

[Herfried K. Wagner [MVP]]

Re: cast from string to button

"Jon Vaughan" <jonnyvaughan@h otmail.com> schrieb:[color=blue]
> btnSelected = CType("btnButto n" & x.ToString, Button)[/color]

Accessing controls by their names or indices
<URL:http://dotnet.mvps.org/dotnet/faqs/?id=controlbyna meindex&lang=en >

--
M S Herfried K. Wagner
M V P <URL:http://dotnet.mvps.org/>
V B <URL:http://classicvb.org/petition/>